Door control



A. KABOT noon CONTROL Oct. 31, 1944.

2 Sheets-Sheet 1 Filed Feb. 26, 1942 lag/.2

A. KABOT DOOR CONTROL 2 Sheets-Sheet 2 Filed Feb. 26, 1942 w w AW w. M 61% M 1 m m w b V W p y w w W Patented Oct. 31, 1944 UNITED STATES PATENT OFFICE DOOR. CONTROL Abraham Kabot, St. Paul, Minn. Application February 26, 1942, Serial No. 432,385 6 Claims. (01. 292-263) frame of the door, so as to limit outward swinging of the door. The device is particularly designed for use in connection with screen and storm doors, and acts to protect these outer doorsagainst injury in windy weather. Many storm and screen doors'are severely injured in windy weather by swinging open beyond the desired point and striking against the outside of the house or building on which they are mounted. Such doors are commonly held closed by a simple coil spring connecting the point on the door to a point on the door frame. Many of these springs are so arranged that after the door has been opened to a predetermined extent, the spring is not further expanded as the door continues to open. As a result, after the door has swung open to the necessary amount, it can readily continue to swing without stretching the usual type of spring.

It is an object of the present invention to provide a door control which embodies a spring which is so mounted that the swinging movement of 'the door continues to stretch the spring as the door continues to open. In other words, continued pressure is exerted on the spring as the door continues to open. As a result, the closing 'device does not reach a point where continued opening movement of the door will not further stretch the spring.

A further feature of the present invention lies in the provision of a pair of pivoted links connecting the door frame to the door so that after the door has been opened to a predetermined maximum position the door can not continue to open. The links are pivotally connected together and one link is connected to the door, while the other link is connected to the door frame. When the links are pivoted into longitudinal alignment, the door can not open to agreater extent.

A further feature of the present invention lies in the provision of a spring connection between the link pivotally connected to the door frame in such a manner that this link acts as a lever to swing the door into closed position. With such a construction the door will be positively urged toward closed position and can not assume a position in which the spring will not exert the closing tendency.

A further feature of the present invention lies A in the provision of a means for holding the door in the maximum open position when it is so desired, so that the door will be held open. This same means may be embodied for holding the door closed when it is found desirable.

These and other objects and novel features of my invention will be more clearlyand fully set forth in the following specification and claims.

In the drawings forming a part of my specification:

Figure 1 is a perspective view of my door control showing the construction thereof.

Figure 2 is a bottom plan view of the door con- Figure 6 is a sectional view through the door showing the bracket for pivotally supporting the link arms to the door.

Figure '7 is a bottom plan view of a modified form of construction of door control.

Figure 8 is a view similar to Figure 7, showing the door in open position.

Figure 9 is a perspective view of a bracket which may be used in place of the bracket illus II so as to provide a firm connection. The link 1 I0 is pivoted to the door frame by means of a pivot 14, while the link I l is pivoted to the door by the pivot l5. I I

The pivot l4 extends through the link It] and through a portion of an attaching bracket Ni.

V The bracket l6 includes a flat strip]? which is bentdownwardly at 19, and is formed with a horizontal portion 20, substantially parallel to the strip IT. The strip continues to provide the inclined portion 2| and terminates in an end portion-22, parallel and adjacent the strip I1.

In other words, the strip is bent into a loop formation with a parallel portion 20 spaced below the fiat portion I! of the strip. In preferred form a small section l8 ofthe strip I1 is offset below the remainder of the strip. Holes 23 and 24 are provided in alignment through the offset portion [8 and through the parallel portion to accommodate the pivot I4. The offset portion I8 permits the head of the rivet to be recessed below the plane of the upper surface of the strip l1. Bolt or screw holes 25 are provided through the end portion 22 and the strip portion I1, through which bolts or screws may be extended to secure the bracket [6 in operative position on the frame of the door, as best illustrated in Figures l and 2.

The pivotlB extends through the end of the link I l and through a bracket 26, best illustrated in Figure 6 of the drawings. U-shaped or'channel-shaped, including a pair of parallel flanges 21 connected by a base 29. The

The i bracket 25 is T pivot I5 extends through the parallel flanges 21 connected by a base 29. The pivot l5 extends through the parallel flanges and is supported thereby, A carriage bolt extends through a rectangular recess 3! in the base 29 of the bracket 26 and extends through the door 32. A washer 33 and nut 34 hold the bolt 36 in place. The nut 34 and washer 33 may be combined, if desired, into a single fastening element.

In order to holdthe links H] and H in alignment, I provide a slide element 35 slidably mounted upon the link it. The slide element 35 is channel-shaped in cross-section, including a base 36 which extends over the upper surface of the link it and includes channel sides 3i-and 39. Extending portions W of the channel sides 31 and 39 project downwardly to extend on opposite sides of the link ll when the slide is moved into engagement therewith. Inturned flanges ll on the channel sides extend beneath the link it to hold the slide in place. Figure 4 illustrates the slide in inoperative position, while Figure 5 illustrates the slide moved into engagement with the end of the link H. The downwardly projecting portions to extend on opposite sides of the link H and prevent this link from pivoting with respect to the link ill.

It will be noted that the link- I I is provided withan extending end A2 which is engageable with the slide 35. Similarly it will be noted in Figure 1 of the drawings that the slide 35 may be moved along the link It! until the ears ii! thereof engage the sides of the link H when the door mm the closed position illustrated in Figure 1.

The link ii! extends beyond the pivot M to provide a projecting end 43 which is preferably offset from the axis of the links. A spring 54 connects this projecting end to a screw eye or'suitable anchor 45 mounted at the side of the door frame. It will be noted that when the projecting end :43 is offset, as illustrated, the spring 44 will not be in alignment with the link arms l0 and H when the door is closed, thereby exerting a pres! sure to pull the door into closed position;

In Figures-,7 and 8 of the drawings, I disclose a door control B, which is identical with the control A, with the exception that the link corresponding to the link H3 is straight throughout its length. The control B comprises a pair of links 46 and 47 pivotally connected at 49. The link 48 is pivotally connected at to the bracket 26, which has been described. The link M is'pivotally connected at 5! tothe bracket 55, which has been described. A slide 35 is mounted onthe arm 41 and is engageable with the projecting end 52 of the link 46 in the manner which has been previously described. A spring 53 connects the projecting end 54 of the link d'lwith the screw lustrated, which may be used in place of the bracket 26. This bracket 59 is folded at 60 intermediate its ends to provide a pair of parallel portions 6!. Outwardly extending side flanges 62 extend away from the central portion ill to provide a means of anchoring the bracket. Aligned openings 63 are provided through the members 8i through which the pivot l5 may extend, and screw or bolt holes 64 are provided in the flanges 52 by means of which the bracket may be secured to the door.

In Figures 10 and 11 of the drawings, I disclose a modified form of construction which discloses a novel method of holding the door in open position when it is so desired. A link arm 65 is illustrated, which is virtually identical with the link 6"! of the control B, and which may be used in place of this previously described link. The link 55 is provided with a projecting end 66, which extends beyond the pivot hole 5! through which the pivot 51 is designed toextend. An aperture 69 extends through the link 68 adjacent the extreme end thereof to accommodate the hook end if! of a spring H which corresponds to the spring 53 of the control B. An elongated slot 12 extends longitudinally of the link 68 beyond the pivot opening 6?. 7

The aperture 69 is soconstructed that the spring H, which is anchored to the door frame 56 at 13,-normally is maintained in this aperture 69 at the end of the slot '12. However, when the door is in open position, the link 65 will assume the position illustrated in Figure 11, at which time the spring H may be forced laterally so that the loop 18 thereof will slide along the slot 12. When the loop 10 of the spring is at the end of the slot opposite the aperture 69, the spring H will tend to hold the door in open position. As soon as the door is manually closed, the spring loop 10 will deavored to set forth the best embodiment thereof, I desire to have it understood that obvious changes may be made within the scope of the following claims, without departing from the spirit of my invention.

I claim: 1. A door control comprising a pair of links pivotally connected together, means pivotally connecting one of said links to a door, means piv qtally connecting the other of said links to a door frame, a projecting end on said second link extending beyond the pivotal connection between .the door frame and the second link, and spring. means connecting said projecting end of said second link to a point on the door frame adjacent the hinge point of the door to urge said door into closed position.

2. A door control for operating a door pivotally supported in a door frame, said control comprising a pair of links pivotally connected together the other of said links being pivoted between its I ends tothe door frame, and resilient means con- 'nected at the other end of said other link and to a point on the door frame adjacent the hinge point of the door to urge said door toward closed position.

3. A door control for use on a door pivotally supported in a door frame, the control comprising a pair of links of unequal length pivotally connected together, the shorter of said links being pivotally secured to the door, the longer of said links being pivoted between its ends to the door frame, the end of the longer link opposite the pivotal connection with the shorter link having an opening therethrough, and resilient means connected to said longer link through said opening, and connected'to a point on the door frame adjacent the hinge point of the door to pull said door into closed position.

4. A door control comprising a pair of links pivotally connected together adjacent one end thereof, means pivotally connecting one of said pivotally connected together adjacent one end thereof, means pivotally connecting the other end of one of said links tothe door, means pivotally connecting the other of said links intermediate its ends to the door frame, spring means resiliently connecting the other end of said other link to the door frame to urge the door toward closed position, and a slot in said other end of said other link extending beyond the pivot point of said other link with'the door frame in which the resilient means is slidably engaged, whereby said resilient means may! be laterally moved along said slot so its connection with said other link may be changed from one side of its pivot point with the door frame to the other side thereof. 6. A door control for a door pivotally mounted in a frame, the control comprising a pair of links pivotally secured together, means pivotally securing one of said links to said door, and means pivotally connecting the other link intermediate its ends to the door frame, a slot in said other link extending from the other end thereof to a point beyond the pivotal attachment of said other link with the door frame, and a resilient means connected in said slot and connected to the door frame, the connection of said resilient means to said other link being adjustable throughout the length of said slot.

ABRAHAM KABOT. 

